Measurement of time of arrival
US9295021B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2009 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Aug 29, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S5/02213
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a method of measuring time of arrival of a signal transmitted from a transmitter (120) to a receiver (110-n). The method comprises: modulating a plurality of narrowband signal portions onto different carrier frequencies; transmitting, by the transmitter, each modulated signal portion to the receiver; receiving, by the receiver, the transmitted signal portions; estimating the channel impulse response by combining (610) the received signal portions; and measuring (620) the time of arrival using the estimated channel impulse response. Further disclosed is a method of measuring a time of arrival of a signal transmitted from a transmitter to a receiver. The method comprises: estimating a noise level (1310) in an impulse response of a channel between the transmitter and the receiver; finding a first peak (1330) in the channel impulse response that is not noise or a side lobe of a subsequent peak, using the estimated noise level; and measuring the time of arrival (1220) using the first peak.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.